The flight attendant caused a stir in the Thai online communities last week for posting hostile comments about Paetongtarn Shinawatra. She also posted a picture of Paetongtarn's seating number.
The Hong Kong-based airline posted on Monday on its Thailand Facebook page that the stewardess is "no longer an employee." It did not release the name of the flight attendant, whose Facebook handle is Honey Lochanachai. She said on Facebook that she resigned to take responsibility.
Thaksin, a divisive figure in Thai politics, lives in self-imposed exile. His sister Yingluck is the current Prime Minister.